Nitrification, denitrification and biological phosphorus removal in piggery wastewater using a sequencing batch reactor

  • Obaja D
  • Macé S
  • Costa J
 et al. 
  • 25


    Mendeley users who have this article in their library.
  • 157


    Citations of this article.


Nutrients in piggery wastewater with high organic matter, nitrogen (N) and phosphorus (P) content were biologically removed in a sequencing batch reactor (SBR) with anaerobic, aerobic and anoxic stages. The SBR was operated with 3 cycles/day, temperature 30°C, sludge retention time (SRT) 1 day and hydraulic retention time (HRT) 11 days. With a wastewater containing 1500 mg/l ammonium and 144 mg/l phosphate, a removal efficiency of 99.7% for nitrogen and 97.3% for phosphate was obtained. Experiments set up to evaluate the effect of temperature on the process showed that it should be run at temperatures higher than 16°C to obtain good removals (>95%). Batch tests (ammonia utilization rate, nitrogen utilization rate and oxygen utilization rate) proved to be good tools to evaluate heterotrophic and autotrophic biomass activity. The SBR proved to be a very flexible tool, and was particularly suitable for the treatment of piggery wastewater, characterized by high nutrient content and by frequent changes in composition and therefore affecting process conditions. © 2002 Elsevier Science Ltd. All rights reserved.

Author-supplied keywords

  • AUR, NUR and OUR tests
  • Biological phosphorus removal
  • Denitrification
  • Nitrification
  • Nutrient removal
  • Piggery wastewater treatment
  • Sequencing batch reactor

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free